Rule or calipers.



No. 869,578; 1 Mmmm-.00129. 1907.

mvv/.LE COMPTE. RULE 0R GALIPBRS.

APPLICATION FILED FEB. 9`, 1907.

lllllllhllllll BY fm,

A TTOHNE Y UNITED STATES PATENT OFFICE.

GEORGE W. LE COMPTE, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO THEAMERICAN IIAME AND BIT COMPANY, OF NEWARK, NEW JERSEY.

RULE OR CALIPERS.

Specification of Letters Patent.

Patented Oct. 29, 1907'.

Application tiled February 9. 1907. Serial No. 356.535.

To all whom it may concern:

Be it known that I, GEORGE W. LE COMPTE, a citizen of the United Statesof America, and a resident of New York, in the county and State of NewYork, have invented a certain new and useful Rule or Calipers, of whichthe following is a specification, the saine being a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to instruments with an edge approximatelystraight subserving purposes of measurement, and in particular to atelescopic or sliding rule or caliper by the use of which the outsideand inside dimensions of articles Inay be taken, and which serves alsoas a lineal measure, the same being capable of being drawn together soas to be in compact form when not required for use, and of beingdistended to the degree necessary for making the measurement required,and it has for its object the provision oi an appliance of the kind setforth, simple in construction, inexperisive to manufacture, and which isalso efficient in practical use.

To attain the desired end, this, my invention, consists in theconstruction, arrangement and operation of parts herein set forth.

In Order to enable the invention to be fully understood, I will proceedto explain the same by reference to the drawings, illustrative of oneembodiment of the invention, which accompany and form a part of thisspecification, and in which Figure l represents an elevation or faceview of an article constructed according to this invention; Fig. 2 is aview of the opposite face or reverse side of the same; Fig. 3 is an edgeview ofthe said appliance, and Fig. 4 is an end view of the same.

Like letters of reference indicate like parts in all the views.

Referring particularly by reference symbols or characters to thedrawings, A denotes one member or section oi my rule which is preferablymade of flexible material, as celluloid, one end of which is providedwith a loop or band a, rigidly attached to the same, and forming asocket for the other member B, and at the opposite extremity having aprojection or depending portion, as the flap a.

The member or section B of the rule is provided with a band or loop brigidly attached to the same, and forming a socket for the member A, andhas a projection or depending portion, as the flap bf, located adjacentto the same, and lying opposite to the projection (M, and the free endb2, b3 of the member B will lie under the band a, the whole being soarranged that when the members Av and B are drawn together, theprojection b/ will lie on or over the projection a and the total lengthof the rule will ordinarily be a little over six inches, and when thesaid members are distended, the

" two members will form a rule preferably twelve inclus in length.

On one face of the member A, which for convenience in description l willterm the inner face of the same, I lay down a series of marks atdeterminate distances, the same ordinarily consisting of andconstituting the fractions of an inch, one scale a2 commencing at thecnd of the member A and lying along the top edge of the same, anddenoting at the band b the inside measurement or diameter of the articlemeasured, or the distance between the outer edges of the flaps a and b;and the other scale a commencing from the llap a/ and lying along thelower edge of the member A, and denoting at the end of the member B theoutside measurement of an article, or the distance between the inneropposite edges of the flaps a/ and b. The bands a and b and llaps a, bare preferably made of transparent material, as celluloid, so that themarkings thereunder' may be clearly seen.

On the lower edge of the reverse side or outer face of the members A andB, I place a scale a4, b, which, when the members are drawn out ordistended to their fullest extent, forms ordinarily a twelve inch rulewhich may be used for ordinary purposes of lineal measurement, and onthe upper edge of the member A, I lay out a metric scale a, b, and inthe center of the rule I mark down a scale a5, similar to the one on thelower edge of the same. On the central portion of the member B however,I place a scale b5 in reverse order, so that the distance between theouter-.ends of the members A and B will be denoted at the band a. Thescale on the upper edge of the members A and B is thus a partly reversedscale, the same reading in inches approximately from one to six on A,and from twelve to seven on B.

I wish it to be understood that I do not desire to be limited to theexact details of construction shown and described, for obviousmodifications will occur to a person skilled in the art.

What I claim as my invention is:

'1. A sliding rule or caliper' consisting ot two members, each having arigid band or loop forming a socket for the other, and cach having adepending portion or flap. the lower member having one scale beginningat the edge of the same, and another scale beginning at the inner' edgeof the tiap, and on the opposite or reverse side the two members havinga lineal scale on one e( ge and a partly reversed scale adjacentthereto, and a metric scale on the other edge, the two said membersbeing made of Ilcxible material, and constructed and arranged to bepushed t0- gether so that the upper tlap will lie over the lower one,and the bauds or loops being formed of transparent material` A slidingrule or caliper' consisting ot two members, each having a dependingportion 0r llap, the lower Incinber havingone scale beginning at theedgc of the same, and another scale beginning at the inner edge oi' theflap, and on the opposite or reverse side the two members having alineal scale on one edge and a partly reversed scale adjacent thereto,the two said members being made of exible material, and constructed andarranged to be pushed together so that the upper flap will lie over thelower one, and the bands or loops being made of transparent material.

3. A sliding rule or caliper consisting ot' two members, each having arigid band or loop forming a socket for the other, and each having adepending portion or flap, the lower member having one scale beginningat the edge ot' the same7 and another scale beginning at the inner edgel of the hap, the two members being made of flexible material, andconstructed and arranged to be pushed together so that the upper hapwill lie over the lower one, and the bauds or loops being formed ot'transparent material.

ln testimony of the foregoing specication, I do hereby sign the same inthe city of New York, county andState ot' New York this 16th day ofJanuary 1907.

GEORGE W. LE COMPTE.

Witnesses z .T. ODELL FOWLER, E. D. JUNIOR.

